Add ISC License explicitly.#2

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jeffgca wants to merge 3 commits intosicmind:masterfrom

midispecs-org:ISC

Commits on Jan 19, 2021

results of npm audit
jeffgca
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Commits on Jan 20, 2021

updated webpack etc so this works after breaking changes
jeffgca
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Adding the ISC license boilerplate explicitly as implied by package.json
jeffgca
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